在粘土岩小断面隧洞开挖施工中,为确保围岩稳定,采用超前管棚注浆、锁脚小导管、安装钢格栅、焊接联系筋和内外两层钢筋网片进行喷射混凝土施工。根据工程施工作业面多的特点,合理安排施工计划,优化施工工序,配合高效的人员和开挖设备,有利于关键工作的顺利进行,希望能够为今后类似工程建设提供借鉴。 In the excavation of small cross-section clay tunnel, in order to ensure the stability of the surrounding rock, the construction of shotcrete was carried out by advanced pipe-shed grouting, small locking foot pipe, installing steel grating, welding contact bars and steel mesh inside and outside the two layers. According to the characteristics of many construction works, reasonable arrangements for the construction plan, optimizing the construction process, with efficient personnel and excavation equipment is conducive to the smooth progress of key work, hoping to provide reference for similar projects in the future.